<html>
<div class="donut"></div>

</html>

<style>
  @keyframes donut-spin {
    0% {
      transform: rotate(0deg);
    }

    100% {
      transform: rotate(360deg);
    }
  }

  .donut {
    display: inline-block;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: #7983ff;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: donut-spin 1.2s linear infinite;
  }
</style>